2jz question

[chris13]

can anyone tell me if the 2jz-ge motor out of the 91-97 gs300 is any good to build on? i know its a 2jz BUT i was just wanting to make 100% sure before i bought it.

thanks

[Elbow]

Yeah, they can hold boost. Search Club NA-T

http://forum.clubna-t.com/

All about these motors.

[Elbow]

...And if you don't want to look there:

The basic differences between the GE and GTE (not comparing either VVTI editions):
-Most obvious difference to anyone familiar with engines is the TURBOS. The GE has none, thats what the 'T' in GTE means.

-Another is the style of intake manifold, the GE has a manifold developed for more torque development in the lower-part of the rpm band vs the GTE's short runner type. The GE doesnt have more torque; its just that it develops more than it would if it had a GTE-style intake manifold. Hope you knew that.

-Compression, the GE runs a 10:1 compression ratio and the GTE runs a 8.5:1 compression ratio. The differences are obtained through a thicker headgasket (.2mm for GE vs 1.6mm for GTE) and lower compression pistons on the GTE. The higher compression allows the GE motor to make the most of its power since it lacks turbos to begin with.

-Injectors and Airflow sensors, the GE runs 330cc top-feed high impedance Denso-style injectors and uses a Karman Vortex air-metering sensor to read how much air volume is being injested. The GTE runs 540cc side-feed low impedance injectors (though uses a resistor pak to raise the impedance for the ECU's sake)... measured through a hotwire MAF sensor. The GE's airflow restriction is around 450hp from the stock AFM and the GTE is around 650-700hp depending on several factors.

-The heads are slightly different. Some say the GE flows better than the GTE, though no concrete numbers have come from a flowbench to prove it. The GTE motor has larger intake ports on the head whereas the GE has larger exhaust ports on the head. You make your own decisions.

-The exhaust manifold and intake manifolds port spacing and studs are completely different and will not work with one another unless some machining is involved with the manifolds themselves. There are people who have successfully grafted the upper part of the GTE intake manifold onto the lower part of the GE manifold.

-The GE motor runs a distributor-based ignition system with spark plug wires and a single coil. The GTE runs coil-on-plug ignition with individual coils for every plug. The distributor gets in the way somestimes of the turbo intake pipe

These are just motor differences, there are many little others such as oil squirters, oil feed/return lines, transmissions, etc.

Now onto Similarities:
Both the GE and GTE bottom ends are VERY strong. The only difference being the pistons themselves. Thats right, the rods and crankshaft are the SAME parts!!! The 2jz motor itself was DESIGNED to be turbocharged from the beginning and is built VERY strongly from the factory. No one yet knows the limits of a GE setup, though there are several 1000whp setups on the GTE with the stock bottom-end. Dave H uses a GE motor and ran a 9sec 1/4 mile time with the stock GE block ( a spare 220k mile motor to be specific!)
All in all, it is very doubtful that you will need to build your motor when designing a NA-T setup unless you're gunning for ridiculous amounts of power. The stock cams are roughly the SAME.

*taken from http://forum.clubna-t.com/showthread.php?t=10*

[TehHakingS14]

you can boost it up to certain point and then you will need new internals and a new tranny to handle very much power, the intrenal on a GE are diferent than the GTE and weaker

[SL33P3R]

Crank and rods are the same on in the GE and GTE. Pistons are obviously higher compression in the GE. You can always keep the GE stock and get a 2.5mm HG and make good power when you boost it. Or you can just get a set of TT pistons and throw them in there, and you basically have a GTE block minus the oil squirters the GTE has that the GE doesnt.

I say get it, no one has confidence in those motors, but they can make PLENTY of power. Just get it and do headstuds and headgasket and call it a day. You can make 500WHP on that pretty safely